ENH: add imports for treaded and async versions

Author: dmgav

src/save_and_restore_api/__init__.py

@@ -1,12 +1,6 @@
-"""
-Copyright (c) 2025 My Name. All rights reserved.
-
-save-and-restore-api: Python package for communication with CS Studio save-and-restore service
-"""
-
 from __future__ import annotations
 
-from ._api import SaveRestoreAPI
+from ._api_threads import _SaveRestoreAPI_Threads as SaveRestoreAPI
 from ._version import version as __version__
 
 __all__ = ["__version__", "SaveRestoreAPI"]

src/save_and_restore_api/_api_async.py

@@ -0,0 +1,4 @@
+from ._api_base import _SaveRestoreAPI_Base
+
+
+class _SaveRestoreAPI_Async(_SaveRestoreAPI_Base): ...

src/save_and_restore_api/_api.py src/save_and_restore_api/_api_base.pysrc/save_and_restore_api/_api.py renamed to src/save_and_restore_api/_api_base.py

@@ -34,7 +34,7 @@ def __init__(self, request, response):
         super().__init__(msg)
 
 
-class SaveRestoreAPI:
+class _SaveRestoreAPI_Base:
     RequestParameterError = RequestParameterError
     RequestTimeoutError = RequestTimeoutError
     RequestFailedError = RequestFailedError

src/save_and_restore_api/_api_threads.py

@@ -0,0 +1,4 @@
+from ._api_base import _SaveRestoreAPI_Base
+
+
+class _SaveRestoreAPI_Threads(_SaveRestoreAPI_Base): ...

src/save_and_restore_api/aio/__init__.py

@@ -0,0 +1,6 @@
+from __future__ import annotations
+
+from .._api_async import _SaveRestoreAPI_Async as SaveRestoreAPI
+from .._version import version as __version__
+
+__all__ = ["__version__", "SaveRestoreAPI"]